IS-IS - IS-IS packet - Link State PDUs
10 important questions on IS-IS - IS-IS packet - Link State PDUs
What is the abbreviation of link state PDU and what does it?
Used to advertise routing information
What are the three parts that identify IS-IS LSPs? 3
-Pseudonode ID
-LSP Number
What is the Pseudonode ID used for?
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What is the LSP number used for?
What is the abbreviation of LSPID and what does it consist of?
-System ID + Pseudonode ID + LSP Number
If the TLV exceed the MTU. How are TLV's advertised?
LSP's are identified with same System and Pseudonode ID, but with
an increasing LSP number as the fragment number starting with 0.
On what device is fragmentation of the LSP performed?
What is the IS-IS command to show the system-id and the related hostname?
R1# show isis hostname
Level System ID Dynamic Hostname (notag)
* 0000.0000.0001 R11 0000.0000.0002 R2
What is the IS-IS command to show the IS-IS database?
IS-IS Level-1 Link State Database:
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
R1.00-00 * 0x00000002 0x4BD3 676 0/0/0
R1.00-01 * 0x00000002 0xF403 708 0/0/0
R1.00-02 * 0x00000003 0xF86B 643 0/0/0R2.00-00 0x00000003 0x449C 574 0/0/0
What does a single LSP contain? 3
-Intra-area and inter-area prefixes (similar to type 1,2,3 LSA's)
-External prefixes (similar to type 5/7 LSAs)
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